®
L200
ADJUSTABLE VOLTAGE AND CURRENT REGULATOR
ADJUSTABLE OUTPUT CURRENT UP TO 2 A
(GUARANTEED UP TO T
j
= 150
°C)
ADJUSTABLE OUTPUT VOLTAGE DOWN TO
2.85 V
INPUT OVERVOLTAGE PROTECTION (UP TO
60 V, 10 ms)
SHORT CIRCUIT PROTECTION
OUTPUT TRANSISTOR S.O.A. PROTECTION
THERMAL OVERLOAD PROTECTION
LOW BIAS CURRENT ON REGULATION PIN
LOW STANDBY CURRENT DRAIN
Pentawatt
®
TO-3 (4 lead)
DESCRIPTION
The L200 is a monolithic integrated circuit for volt-
age and current programmable regulation. It is
available in Pentawatt
®
package or 4-lead TO-3
metal case. Current limiting, power limiting, thermal
shutdown and input overvoltage protection (up to
60 V) make the L200 virtually blow-out proof.
The L200 can be used to replace fixed voltage
regulators when high output voltage precision is
required and eliminates the need to stock a range
of fixed voltage regulators.
ABSOLUTE MAXIMUM RATINGS
Symbol
V
i
V
i
∆V
i-o
I
o
P
tot
T
stg
T
op
DC Input Voltage
Peak Input Voltage (10 ms)
Dropout Voltage
Output Current
Power Dissipation
Storage Temperature
Operating Junction Temperature for L200C
for L200
Parameter
Value
40
60
32
internally limited
internally limited
-55 to 150
-25 to 150
-55 to 150
°C
°C
°C
Unit
V
V
V
THERMAL DATA
TO-3
R
th j-case
R
th j-amb
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
Max
Max
4
°C/W
35
°C/W
Pentawatt
®
3
°C/W
50
°C/W
January 2000
1/12
L200
CONNECTION DIAGRAMS AND ORDER CODES
(top views)
Type
L200
L200 C
Pentawatt
®
TO-3
L200 T
L200 CH
L200 CV
L200 CT
BLOCK DIAGRAM
APPLICATION CIRCUITS
Figure 1. Programmable Voltage Regulator
with Current Limiting
Figure 2. Programmable Current Regulator.
2/12
L200
SCHEMATIC DIAGRAM
ELECTRICAL CHARACTERISTICS
(T
amb
= 25
°C,
unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VOLTAGE REGULATION LOOP
I
d
e
N
V
o
∆
V
o
V
o
∆
V
i
∆
V
o
SVR
Supply Voltage Rejection
Quiescent drain Current (pin 3)
Output Noise Voltage
Output Voltage Range
Voltage Load Regulation
(note 1)
Line Regulation
V
i
= 20 V
Vo = Vref
B = 1 MHz
I
o
= 10 mA
∆I
o
= 2 A
∆I
o
= 1.5 A
V
0
= 5 V
V
i
= 8 to 18 V
V
0
= 5 V
I
o
= 500 mA
∆V
i
= 10 V
pp
f = 100 Hz (note 2)
I
o
= 1.5 A
V
i
= 20 V
∆V
0
≤
2%
I
o
= 10 mA
2.64
I
o
= 10 mA
80
2.85
0.15
0.1
36
1
0.9
4.2
9.2
mA
µV
V
%
%
48
60
dB
48
60
2
2.77
2.5
2.86
dB
V
V
∆V
i-o
V
ref
Droupout Voltage between Pins 1
and 5
Reference Voltage (pin 4)
3/12
L200
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
∆V
ref
Parameter
Average Temperature Coefficient
of Reference Voltage
Test Conditions
V
i
= 20 V
Io = 10mA
for Tj = - 25 to 125
°C
for Tj = 125 to 150
°C
Min.
Typ.
-0.25
-1.5
3
-0.5
10
Max.
Unit
mV/°C
mV/°C
µA
%/°C
I
4
∆
I
4
∆
T
•
I
4
Z
o
Bias Current and Pin 4
Average Temperature
Coefficient (pin 4)
Output Impedance
V
i
= 10 V
I
o
= 0.5 A
V
o
= V
ref
f = 100 Hz
1.5
mΩ
CURRENT REGULATION LOOP
V
SC
∆
V
SC
∆
T
•
V
SC
∆
I
o
I
o
Current Limit Sense Voltage
between Pins 5 and 2
Average Temperature
Coefficient of V
SC
V
i
= 10 V
I
5
= 100 mA
V
o
= V
ref
0.38
0.45
0.03
0.52
V
%/°C
Current Load Regulation
Vi = 10 V
I
o
= 0.5 A
I
o
= 1A
I
o
= 1.5 A
∆Vo
= 3V
1.4
1
0.9
3.6
%
%
%
A
I
SC
Peak Short Circuit Current
V
i
- V
0
= 14 V
(pins 2 and 5 short circuited)
Note 1: A load step of 2 A can be applied provited that input-output differential voltage is lower than 20 V (see Figure 3).
Note 2: The same performance can be maintained at higher output levels if a bypassing capacitor is provited between pins 2 and 4.
Figure 3. Typical Safe Operating Area
Protection.
Figure 4. Quiescent Current vs. Supply
Voltage.
4/12
L200
Figure 5. Quiescent Current vs. Junction
Voltage.
Figure 6. Quiescent Current vs. Output
Current.
Figure 7. Output Noise Voltage vs. Output
Voltage.
Figure 8. Output Noise Voltage vs.
Frequency.
Figure 9. Reference Voltage vs. Junction
Temperature.
Figure 10. Voltage Load Regulation vs.
Junction Temperature.
5/12